"I think it's just fatigue to be honest but I'll be ok," said Sturridge.

"I'm feeling great. I put in the work and trained a lot in the Summer in LA. I didn't miss many sessions here. They've looked after me. We've done triple sessions and I've trained pretty much every single session.

"I'm feeling the best I've felt in a while and I'm looking forward to the season and hopefully we can have some success this season."